law twofish_block_round_trip

bend-osdev-crypto@0.1.0.0 · LAWS.bend:837

import Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend as Tf

837# Twofish (legacy-ciphers): decryption undoes encryption, for every key and block
838law twofish_block_round_trip:
839  for k: Tf.LcTwofishKey
840  for +b: M.CmBlock
841  {Tf.LcTwofish.decrypt(k, Tf.LcTwofish.encrypt(k, b)) == b : M.CmBlock}